Boseiju, Who Endures,
Fateful Absence, and
Infernal Grasp (and also
Krosan Grip and/or
Tear Asunder, which I never Kick) are in basically ALL of my Decks now because they're SUCH good removal and I don't play mono Green. I never used
Nature's Claim because I somehow didn't know it existed until AFTER Boseiju came out, and I don't use
Path to Exile (and only occasionally use the similar
Swords to Plowshares) because Planeswalkers are common threats in my "meta" and
Winds of Abandon is the same effect (albeit slower), but is also a wipe (hello,
Vanquish the Horde), and I have plenty of other Instant-speed removal.
Cankerbloom is also good, but my playgroup runs so much removal that I'll never get to use it.
An Offer You Can't Refuse is WAY better than
Swan Song (which is much too narrow as I've mentioned in other threads), but I still don't use it (or
Tibalt's Trickery) because "can't be countered" has become so prevalent in my playgroup that "traditional" Counterspells are BAD; we use things like
Unsubstantiate and
Ertai's Meddling instead. I can see the appeal of
Minor Misstep but think it's too narrow (although my playgroup banned
Mental Misstep, so it's definitely a welcome alternative...essentially better, even), and
Witness Protection is a card I didn't know existed and can't find room for on such short notice.
Esper Sentinel (and
Archivist of Oghma, but if I have Black I'd still rather use
Opposition Agent) are awesome,
Loran of the Third Path is good but I can't seem to fit her in anywhere, and
Faerie Mastermind is cool but I'd still rather stop the extra draws with
Notion Thief (I don't play mono Blue).
Plaza of Heroes and
Relic of Legends are cards I need to use more, and
Farewell and
Urza's Saga occasionally get cut for space (and my playgroup has banned
Sol Ring so there's often only one or two targets for the latter, even including its replacement
Sol Talisman).
While I see the appeal of
Dauthi Voidwalker,
Dress Down,
Flumph and
Tribute to the World Tree, I would personally never use them;
Dress Down doesn't fit easily (and I don't main Storm), I already said I don't play mono Green, and the others suffer from the same issue as
Cankerbloom.
I WAY overuse
Pull from Eternity, and I personally don't think any of the other cards in this thread are as good as any of you do, but I can't put my finger on why at this time.